User blog comment:Jwle7/Generation 6 Selected Pokémon Competition Round 4/@comment-32391784-20171012204512/@comment-31343441-20171013213458

1337: Shados, the Elite Pokemon [Dark | Steel]

Pokedex Entry: "This Pokemon evolves from Derpos, #1336, when it finds a pair of cool shades, marking its passage into the ELITE. If a Trainer has a pair of sunglasses and this Pokemon, chances are that he or she won't see the sunglasses again."

Evolves from Derpos when holding Cool Shades and levelling up.

Evo Line:

Garpos (Happiness) -> Derpos (Cool Shades) -> Shados